N4-(9,9-dibenzyl-9H-fluoren-2-yl)-N4-(4-(diphenylamino)phenyl)-N4',N4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine

N4-(9-(4-fluorophenyl)-9H-carbazol-2-yl)-N4'-(naphthalen-1-yl)-N4,N4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine

N4-(9-(4-methoxyphenyl)-9H-carbazol-2-yl)-N4,N4',N4'-triphenyl-[1,1'-biphenyl]-4,4'-diamine

N4-(2'-(9-methyl-9H-fluoren-9-yl)spiro[cyclopentane-1,9'-fluoren]-7'-yl)-N4,N4'-di(naphthalen-1-yl)-N4'-phenyl-[1,1'-biphenyl]-4,4'-diamine

N4-(7-(naphthalen-2-yl)-7H-benzo[c]carbazol-4-yl)-N4,N4'-diphenyl-N4'-(triphenylen-2-yl)-[1,1'-biphenyl]-4,4'-diamine

N4-(5-(4H-benzo[def]carbazol-4-yl)naphthalen-1-yl)-N4-(9,9-dimethyl-9H-fluoren-2-yl)-N4',N4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine

N4-(4-(di-p-tolylamino)phenyl)-N4-(9,9-dimethyl-9H-fluoren-2-yl)-N4',N4'-di-p-tolyl-[1,1'-biphenyl]-4,4'-diamine

N4-(4-(8-(dibenzo[b,d]furan-3-yl)dibenzo[b,d]thiophen-2-yl)phenyl)-N4,N4',N4'-triphenyl-[1,1'-biphenyl]-4,4'-diamine

N4-(5-(1,10-phenanthrolin-4-yl)naphthalen-1-yl)-N4,N4',N4'-triphenyl-[1,1'-biphenyl]-4,4'-diamine

N4-(4'-(di-p-tolylamino)-[1,1'-biphenyl]-4-yl)-N4'-phenyl-N4,N4'-di-p-tolyl-[1,1'-biphenyl]-4,4'-diamine

N4-([1,1'-biphenyl]-3-yl)-N4-(4,4-dimethyl-4H-cyclopenta[def]phenanthren-8-yl)-N4'-(naphthalen-1-yl)-N4'-(9-phenyl-9H-carbazol-3-yl)-[1,1'-biphenyl]-4,4'-diamine

N4-(4-(3,7-bis(trifluoromethyl)-10H-phenoxazin-10-yl)phenyl)-N4,N4'-bis(4-fluorophenyl)-N4'-(3',4',5'-trifluoro-[1,1'-biphenyl]-4-yl)-[1,1'-biphenyl]-4,4'-diamine

N4-(4-(3-(9,9-dimethyl-9H-fluoren-2-yl)bicyclo[1.1.1]pentan-1-yl)phenyl)-N4,N4',N4'-triphenyl-[1,1'-biphenyl]-4,4'-diamine

N4-(4-(3,6-diisopropyl-9H-carbazol-9-yl)phenyl)-N4,N4'-diphenyl-N4'-(triphenylen-2-yl)-[1,1'-biphenyl]-4,4'-diamine

N4-(4-(5-isopropyl-7bH-indeno[1,2,3-jk]fluoren-7b-yl)phenyl)-N4,N4',N4'-triphenyl-[1,1'-biphenyl]-4,4'-diamine

N4-([1,1'-biphenyl]-3-yl)-N4'-(4,4-dimethyl-4H-cyclopenta[def]phenanthren-8-yl)-N4-(9,9-dimethyl-9H-fluoren-3-yl)-N4'-(9-phenyl-9H-carbazol-2-yl)-[1,1'-biphenyl]-4,4'-diamine

N4-(dibenzo[b,d]thiophen-4-yl)-N4-(naphthalen-2-yl)-N4'-phenyl-N4'-(10-phenyl-10H-phenanthro[9,10-b]carbazol-12-yl)-[1,1'-biphenyl]-4,4'-diamine

N4-(dibenzo[b,d]thiophen-4-yl)-N4'-(naphthalen-2-yl)-N4'-(6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)naphthalen-2-yl)-N4-(4-(((1,2,2-trifluorovinyl)oxy)methyl)phenyl)-[1,1'-biphenyl]-4,4'-diamine

N4-(4'-(diphenylamino)-[1,1'-biphenyl]-4-yl)-N4',N4'-diphenyl-N4-(4-((triisopropylsilyl)ethynyl)phenyl)-[1,1'-biphenyl]-4,4'-diamine

N4-([1,1'-biphenyl]-3-yl)-N4'-(6,6-diphenyl-6H-benzo[b]indeno[1,2-d]thiophen-8-yl)-N4,N4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine